Relay



W. KAISLING.

RELAY.

APPLICATION FILED OCT. 22, 191?- 1,366,912. 1 Patented Feb. 1,1921.

271/5570? Z/Z/iZ/z'am K525722757. .Eg/WW UNITED STATES PATENT OFFICE.

WILLIAM KAISLING, OF CHICAGO, ILLINOIS, ASSIGNOR TO KELLOGG SWITCHBOARD AND SUPPLY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

RELAY.

Specification of Letters Patent.

Patented Feb. 1, 1921.

Application filed October 22, 1917. Serial No. 197,772.

To all whom it may concern:

Be it known that I, \VILLIAM KAISLING, a citizen of the United States of America, residing in Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Relays, of which the following is a specification.

My invention relates to electromagnetic devices for use in electrical circuits, and has to do more particularly with relays for use in connection with telephone circuits, although they are equally applicable for other uses. The present types of relays in commercial use are provided with armatures that are maintained in their pivoted or poised position by means of screws or nuts, and are objectionable for the reason that it requires some sort of a tool to loosen the screws and nuts to remove the armatures of the relays. To overcome this objection, I have arranged a simple but efficient device consisting of merely a latch pivotally secured to the armature of the relay for maintaining the armature in its fulcrumed position.

It is the object of my invention to produce an improved relay of the class above described, which will obviate all objectionable features and that embodies desirable fea tures all in a simple, efficient and economical manner, and to accomplish this object and others to be pointed out in the ensuing specification and in the appended claims, my invention consists in the novel details of construction, parts and combination of parts as will be herein-after more fully described.

For a better understanding of my invention, reference may be had to the accompanying drawing in which I have illustrated the preferred embodiment of my invention, the parts being shown in their normal positions, like parts in the several views being indicated by like reference characters, and in which: v

Figure 1 is a plan View of the preferred form of my invention, showing both a line and a cut-off relay;

Fig. 2 is a top View of Fig. 1;

Fig. 3 is a bottom View of Fig. 1 looking in the opposite direction to that of Fig. 2;

Fig. 4 is a right end View of Fig. 1;

Fig. 5 is an enlarged partial sectional view of the armature and supporting means;

Fig. 6 is a partial perspective View of the heel iron; and a vided with a screw-threaded extension 4 which passes through a suitable opening in the angular extension 5 of the heel iron 6. The core 3 and Winding 2 are suitably held in place upon the angular extension 5 of the heel iron 6 by means of a nut 7 which has screw-threaded engagement with the threaded extension 4: of the core 3. The relay A, as a whole, is supported upon a mounting plate 8, which plate is provided with a suitable opening through which the threaded extension 4 of the core 3 passes. A nut 9 is provided having screw-threaded engagement with the extension 4: of the core 3 to secure the relay A to the mounting strip 8. Suitable terminals 10 for the energizing winding 2 of the relay A are provided, and extend through orifices in the mounting plate 8 to form terminals for the exterior circuit connections.

The arm 5 of the heel iron 6 extends parallel with the coil 2, and is provided with an integrally formed projection 12 which forms supporting means for the armature 13. The armature 13 has a suitable opening 14 in its arm 15, the said opening 14 being of a size to receive the projection 12 of the heel iron 6. A latch 16 is pivotally secured to the angular extension 15 of the armature 13 by means of a pivot pin 17 The said latch 16 cooperates with a slot 18 cut in the under surface of the projection 12 of the heel iron 6, as will now be described.

To secure the armature 13 in its fulcrumed position against displacement, it is placed upon the heel iron 6 so that the projection 12 extends through the orifice 14 in said heel iron, then the pivoted catch 16 is turned until it enters the slot 18 cut in the said projection 12. In this position the armature is firmly held against displacement, as is readily apparent.

When the armature 13 is secured in position upon the heel iron, the free extremity of the latch 16 registers with the slot 18 cut in the bottom portion of the projection 12 to prevent the armature from becoming displaced. To' prevent the armature from stickin to the forward end of the core, the rivet 1% which pivotally supports the latch 16 is of non-magnetic material, such as brass or copper, and the flat portion 20 of the rivet 17 next to the core 3 engages the end of the core 3, when the armature 13 is attracted.

To remove the armature 13 from its support on projection 12, the pivoted latch 16 is moved out of the slot 18'to the up or down position shown dotted in Fig. 4. When in this position, the free extremity of the latch 16 is free of the slot 18, and the armature ma be readily withdrawn from the supporting projection 12 of the heel iron 6.

I show a spring combination S mounted upon the heel iron 6 by means of the screws 22, the free ends of the springs extendlng forward so that one of them may be acted upon by the attracted armature to bring about the closure or opening of the spring contacts, depending upon the spring combination.

In illustrating my invention, I have shown an embodiment worked out for commercial purposes, but it will be obvious to those skilled in the art that minor changes may be made without departing from the spirit of my invention. T erefore, I do not wish to be limited to the exact structure as shown, but aim to cover all such changes and modifications as come within the spirit and scope of the appended claims.

What I claim as new and desire to secure by United States Letters Patent is:

1. A relay structure of the class described including a heel iron and an armature, an integrally formed ear for said heel iron, an orifice cut in said armature through which said ear protrudes, and means carried by said armature adapted to cooperate with said integrally formed ear to retain said armature in its position relative to said heel iron.

2. The combination with a magnet, an armature therefor having two arms at an angle to each other, a support for the armature having an edge upon which as a fulcrum said armature is carried intermediate its ends, a protruding member for said support extending into an orifice cut in one arm of said armature, and means carried by said armature adapted to cooperate with said protruding member to maintain the said armature in its fulcrumed position upon said support.

3. In a relay, the combination with a magnet structure provided with a heel iron having a centrally located forwardly projecting integrally formed ear extending parallel to the core of said magnet, of an armature for said magnet provided with an orifice adapted to receive said integrally formed ear, and means carried by said armature adapted to cooperate with said integrally formed ear to retain said armature in its fulcrumed position upon said heel iron.

4. In an electromagnet, the combination of a U-shaped frame of magnetic material one leg thereof forming the core and provided with an energizing winding, of an angular armature fulcrumed on the end of the other leg of said frame, anorifice cut in said armature, an integrally formed ear for said last mentioned leg, said integrally formed car being adapted to fit into said orifice, and means carried by said armature ada ted to cooperate with said ear to maintain t e said armature in position.

5. Ina relay, the combination of a magnet structure provided with an angularly-sha d heel iron having one arm extending fb rward parallel to the core of said magnet, of an angular armature fulcrumed upon said heel iron, a forwardly projecting member for said heel iron, an orifice cut in said armature adapted to receive said projecting member, and means secured to said armature for cooperation with said forwardly projecting member to firmly secure said armature in position.

6. In a relay, the combination of a heel iron and an armature carried thereby, an orifice cut in said armature, an ear for said heel iron extending into said orifice, and a latch secured to said armature adapted to cooperate with said ear to maintain said armature in its fulcrumed position upon said heel iron.

7 In arelay, the combination of a magnet structure, of an angular heel piece for said structure provided with an extended arm parallel to the core of the magnet, an armature fulcrumed upon said heel iron and provided with an aperture adapted to receive said integrall formed ear, 9. slot cut in the under side 0 said integrally formed ear, and a member pivoted to said armature adapted to have its free extremity extend into said slot to maintain said armature in its fulcrumed position.

8. A relay structure of the class described including a heel iron and an armature, an orifice cut in said armature, an integrally formed ear for said heel iron extending into said orifice, an aperture cut in said heel iron, and means connected to said armature adapted to cooperate with the aperture cut in said integrall formed ear to retain said armature in its ulcrumed position upon said heel iron.

9. The combination of a magnet provided with an extended core, of an armature having two arms at an angle to each other, a support for said armature to which said magnet is secured via its extended core, one arm of said armature extending across and in front of the core of the magnet so as to be attracted thereby, a contact spring secured to said support operable by the other arm of said armature, an aperture cut in the first mentioned arm of said'armature, a protruding ear for said support extending through said armature, and a member secured to said armature adapted to cooperate with said protruding member for maintaining said armature in its fulcrumed position upon said support.

10. A relay structure of the character described including a heel iron, an armature carried by said heel iron, and a member attached to said heel iron extending through an orifice in said armature in position to cooperate with a member carried by said armature to retain said armature in position.

11. A device of the character described including an electromagnet, a heel iron ture from contacting directly with the core of said electromagnet.

12; A relay structure of the character described. including an electromagnet core, a heel iron, an armature supported thereby, means secured to said armature for maintaining the same in position, and a member securing said means to said armature, said member being adapted to prevent direct contact between the armature and the core of the electromagnet.

18. A relay structure of the character described including a heel iron and an armature, a projecting member for said heel iron, and a pivotally secured member for said armature for cooperation with said projecting member to retain said armature in its position relative to said heel iron.

14. A device of the character described including a heel iron, an angular armature, "and a member pivotally secured to said armature for cooperation with said heel iron to retain said armature in its position relative to said heel iron.

Signed by me at Chicago, in the county of Cook and State of Illinois, this 19th day of October, 1917.

WILLIAM KAISLING. 

